(1) Intentional system: a system whose behaviour we may reliably predict via the intentional strategy, i.e., by interpreting its behaviour as a (more or less) rational consequence of its beliefs and desires. (2) Reflexive intentional system: a system that is able to interpret itself via the intentional strategy, and whose behaviour is, thus, influenced by an understanding of itself. All intentional systems behave in a meaningful way, but only reflexive intentional systems are aware of the meaning, Hence, only the latter are conscious of what they are doing